Lenses

Telecentric lenses

How to choose a telecentric lens

Telecentric and bi-telecentric lenses keep magnification constant through the depth of field, so parts measure the same size wherever they sit. Pick by magnification (sensor size / field of view), working distance and the largest sensor you use.

Shop by sensor format: 4/3-inch telecentric lenses · 1.1-inch telecentric lenses · 1-inch telecentric lenses · 2/3-inch telecentric lenses · 1/1.8-inch telecentric lenses · 1/2-inch telecentric lenses · 1/2.5-inch telecentric lenses · APS-C telecentric lenses · APS-H telecentric lenses · Full frame telecentric lenses
Shop by mount: F-mount telecentric lenses · M58-mount telecentric lenses · M42-mount telecentric lenses · M72-mount telecentric lenses
Shop by magnification: 0.1x telecentric lenses · 0.2x telecentric lenses · 0.3x telecentric lenses · 0.4x telecentric lenses · 0.5x telecentric lenses · 0.6x telecentric lenses · 0.7x telecentric lenses · 0.8x telecentric lenses · 1x telecentric lenses · 1.5x telecentric lenses · 2x telecentric lenses · 2.5x telecentric lenses · 3x telecentric lenses · 4x telecentric lenses · 6x telecentric lenses

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Telecentric lenses

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LS-TCL-03520.036× telecentric lens, 2/3", C-mount 0.036×C-mount2/3"366 mm141 μm133.33 x 100.00 mm$18,719.00Quote Lead time confirmed with your quote
LS-TCL-03450.11× telecentric lens, 2/3", C-mount, wavelength 520 nm 0.11×C-mount2/3"226.7 mm46 μm43.64 x 32.73 mm$10,499.00Quote Lead time confirmed with your quote
LS-TCL-03480.033× telecentric lens, 1/1.8", C-mount 0.033×C-mount1/1.8"328 mm154.3 μm145.90 x 109.42 mm$13,639.00Quote Lead time confirmed with your quote
LS-TCL-03500.059× telecentric lens, 2/3", C-mount 0.059×C-mount2/3"217.4 mm86.6 μm81.91 x 61.43 mm$13,639.00Quote Lead time confirmed with your quote
LS-TCL-03470.044× telecentric lens, 1/1.8", C-mount 0.044×C-mount1/1.8"217.4 mm115.3 μm-$13,639.00Quote Lead time confirmed with your quote
LS-TCL-03460.093× telecentric lens, 2/3", C-mount, 1084 x 185 x 207 mm 0.093×C-mount2/3"278.6 mm55 μm51.61 x 38.71 mm$12,639.00Quote Lead time confirmed with your quote
LS-TCL-03440.138× telecentric lens, 2/3", C-mount, wavelength 520 nm 0.138×C-mount2/3"181.8 mm37 μm34.78 x 26.09 mm$8,699.00Quote Lead time confirmed with your quote
LS-TCL-03430.157× telecentric lens, 2/3", C-mount, wavelength 520 nm 0.157×C-mount2/3"157.8 mm32 μm30.57 x 22.93 mm$7,129.00Quote Lead time confirmed with your quote
LS-TCL-03420.184× telecentric lens, 2/3", C-mount, wavelength 520 nm, 653 x 117 x 148 mm 0.184×C-mount2/3"132.9 mm28 μm26.09 x 19.57 mm$6,539.00Quote Lead time confirmed with your quote
LS-TCL-03410.243× telecentric lens, 2/3", C-mount, wavelength 520 nm 0.243×C-mount2/3"102.5 mm21 μm19.75 x 14.81 mm$5,969.00Quote Lead time confirmed with your quote
LS-TCL-03381× telecentric lens, 2/3", C-mount, wavelength 520 nm 1×C-mount2/3"62.2 mm7 μm4.80 x 3.60 mm$3,619.00Quote Lead time confirmed with your quote
LS-TCL-03400.35× telecentric lens, 2/3", C-mount, 520 nm 0.35×C-mount2/3"67.2 mm15 μm13.71 x 10.29 mm$4,389.00Quote Lead time confirmed with your quote
LS-TCL-03360.059× telecentric lens, 4/3", F-mount 0.059×F-mount4/3"500 mm86 μm-$55,459.00Quote Lead time confirmed with your quote
LS-TCL-03390.528× telecentric lens, 2/3", C-mount, 520 nm 0.528×C-mount2/3"43.1 mm10 μm9.09 x 6.82 mm$4,119.00Quote Lead time confirmed with your quote
LS-TCL-03320.073× telecentric lens, 4/3", C-mount 0.073×C-mount4/3"492.8 mm70 μm-$18,129.00Quote Lead time confirmed with your quote
LS-TCL-03340.073× telecentric lens, 4/3", M42-mount 0.073×M424/3"492.8 mm70 μm-$18,129.00Quote Lead time confirmed with your quote
LS-TCL-03350.059× telecentric lens, 4/3", C-mount 0.059×C-mount4/3"500 mm86 μm-$55,459.00Quote Lead time confirmed with your quote
LS-TCL-03370.059× telecentric lens, 4/3", M42-mount 0.059×M424/3"500 mm86 μm-$55,459.00Quote Lead time confirmed with your quote
LS-TCL-03290.091× telecentric lens, 4/3", C-mount 0.091×C-mount4/3"527.6 mm56 μm-$12,879.00Quote Lead time confirmed with your quote
LS-TCL-03300.091× telecentric lens, 4/3", F-mount 0.091×F-mount4/3"527.6 mm56 μm-$12,879.00Quote Lead time confirmed with your quote
LS-TCL-03310.091× telecentric lens, 4/3", M42-mount 0.091×M424/3"527.6 mm56 μm-$12,879.00Quote Lead time confirmed with your quote
LS-TCL-03240.143× telecentric lens, 4/3", F-mount -F-mount4/3"-35 μm-$5,589.00Quote Lead time confirmed with your quote
LS-TCL-03280.122× telecentric lens, 4/3", M42-mount 0.122×M424/3"396 mm42 μm-$6,749.00Quote Lead time confirmed with your quote
LS-TCL-03230.143× telecentric lens, 4/3", C-mount -C-mount4/3"-35 μm-$5,589.00Quote Lead time confirmed with your quote

How to choose a telecentric lens

A telecentric lens keeps the image size of the part constant when the part moves closer or farther within the depth of field, and removes perspective, so edges and holes are measured at their true size. Choose by magnification, sensor and working distance.

1. Magnification = sensor size / field of view

The field of view is the sensor size divided by the magnification. Pick the magnification that fits the part with a small margin, or let the telecentric lens calculator work it out for your sensor and part:

MagnificationField of view, 2/3-inch sensor (8.8 x 6.6 mm)Field of view, 1.1-inch sensor (14.1 x 10.3 mm)
0.1x88 x 66 mm141 x 103 mm
0.2x44 x 33 mm70.5 x 51.5 mm
0.3x29.3 x 22 mm47 x 34.3 mm
0.5x17.6 x 13.2 mm28.2 x 20.6 mm
0.8x11 x 8.3 mm17.6 x 12.9 mm
1x8.8 x 6.6 mm14.1 x 10.3 mm
2x4.4 x 3.3 mm7.1 x 5.2 mm
4x2.2 x 1.7 mm3.5 x 2.6 mm

2. Sensor format

The lens must be rated for the camera's sensor format or larger, or the corners go dark. Larger sensors need larger (and longer) lenses with F-mount or M58 / M72 mounts.

3. Object-side or bi-telecentric

Object-side telecentric lenses keep the magnification constant as the part moves. Bi-telecentric lenses are telecentric on the camera side too, so small focus changes and sensor tilt do not change the size either: the choice for the highest measuring accuracy.

4. Working distance, depth of field, front size

Check the working distance against the space in the machine, and the depth of field against how much the part height varies. The front of the lens must be larger than the field of view - a telecentric lens only sees what fits in front of it.

5. Lighting

For silhouettes, pair the lens with a collimated backlight: parallel light gives the sharpest edges. For surface features use a coaxial light that fits the lens.